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| 1 | 2011年日本东北地区太平洋近海地震地基液化灾害综述显示文摘2011年3月11日,日本太平洋东海岸发生Mw9.0级大地震,并引发巨大海啸,导致了日本东北和关东地区大面积的地基液化震害。通过现场震害调查和最新资料分析,首先较为系统地介绍了日本地震受灾区的液化宏观现象和典型震害特征。其次,研究了余震再液化和地震-海啸耦合灾害的破坏机制和特征,指出余震再液化受地震力大小、应力历史及超孔隙水压力消散程度的影响,并将地震和海啸耦合破坏过程分为3个阶段:震后液化阶段、间歇期恢复阶段、海啸流滑破坏阶段;最后,对此次强震中有关抗液化地基处理方法的有效性进行了分析与探讨,以期为今后的地基抗液化设计提供参考与借鉴。 | 黄雨 于淼 BHATTACHARYA Subhamoy | 2013 | 岩土工程学报2013，35，5： | 33 |
| 2 | 海上风机支撑结构动力特性模型试验研究显示文摘海上风机是一种高柔性海洋结构物,其支撑结构动力响应受风、浪、流等环境因素,风机荷载及基础刚度的影响异常敏感。本文在结构动力特性试验平台上,建立了以基础—塔架—顶部集中质量为一体的风机简化分析模型,并利用新型循环加载装置,在砂土中开展了4组针对风机模型长期动力特性变化规律的试验。主要研究在一定的加载频率下,支撑结构一阶自振频率在不同幅值的循环荷载作用下的变化规律,并从土体力学行为特性及循环荷载下土颗粒运移规律角度对试验现象进行分析。通过该模型试验所获得的结论,并基于一系列的相似性准则,在一定程度上可以揭示长期循环荷载下,海上风机支撑结构动力特性的变化规律,并对今后实际工程中有关基础选型及支撑结构设计上给出了相关建议。 | 余璐庆 王立忠 BHATTACHARYA Subhamoy 国振 李玲玲 邢月龙 | 2014 | 地震工程学报2014，36，4： | 8 |
| 3 | Assessment of natural frequency of installed offshore wind turbines using nonlinear finite element model considering soil-monopile interaction显示文摘A nonlinear finite element model is developed to examine the lateral behaviors of monopiles, which support offshore wind turbines(OWTs) chosen from five different offshore wind farms in Europe. The simulation is using this model to accurately estimate the natural frequency of these slender structures, as a function of the interaction of the foundations with the subsoil. After a brief introduction to the wind power energy as a reliable alternative in comparison to fossil fuel, the paper focuses on concept of natural frequency as a primary indicator in designing the foundations of OWTs. Then the range of natural frequencies is provided for a safe design purpose. Next, an analytical expression of an OWT natural frequency is presented as a function of soil-monopile interaction through monopile head springs characterized by lateral stiffness K_L, rotational stiffness K_R and cross-coupling stiffness K_(LR) of which the differences are discussed. The nonlinear pseudo three-dimensional finite element vertical slices model has been used to analyze the lateral behaviors of monopiles supporting the OWTs of different wind farm sites considered. Through the monopiles head movements(displacements and rotations), the values of K_L, K_R and K_(LR) were obtained and substituted in the analytical expression of natural frequency for comparison. The comparison results between computed and measured natural frequencies showed an excellent agreement for most cases. This confirms the convenience of the finite element model used for the accurate estimation of the monopile head stiffness. | Djillali Amar Bouzid Subhamoy Bhattacharya Lalahoum Otsmane | 2018 | Journal of Rock Mechanics and Geotechnical Engineering2018，10，2： | 2 |
| 4 | Basic Theory in Construction of Boolean Functions with Maximum Possible Annihilator Immunity显示文摘 | Deepak Kumar Dalai Subhamoy Maitra Sumanta Sarkar | 2006 | Designs Codes and Cryptography2006，，1： | 1 |
| 5 | Experimental p-y curves for liquefied soils from centrifuge tests显示文摘The present study aims to obtain p-y curves(Winkler spring properties for lateral pile-soil interaction)for liquefied soil from 12 comprehensive centrifuge test cases where pile groups were embedded in liquefiable soil.The p-y curve for fully liquefied soil is back-calculated from the dynamic centrifuge test data using a numerical procedure from the recorded soil response and strain records from the instrumented pile.The p-y curves were obtained for two ground conditions:(a)lateral spreading of liquefied soil,and(b)liquefied soil in level ground.These ground conditions are simulated in the model by having collapsing and non-collapsing intermittent boundaries,which are modelled as quay walls.The p-y curves back-calculated from the centrifuge tests are compared with representative reduced API p-y curves for liquefied soils(known as p-multiplier).The response of p-y curves at full liquefaction is presented and critical observations of lateral pile-soil interaction are discussed.Based on the results of these model tests,guidance for the construction of p-y curves for use in engineering practice is also provided. | Suresh R.Dash Subhamoy Bhattacharya | 2021 | Earthquake Engineering and Engineering Vibration2021，20，4： | 1 |
| 6 | Bending-buckling Interaction as A Failure Mechanism of Piles in Liquefiable Soils 显示文摘 | Suresh R Dash Subhamoy Bhattacharya Anthony Blakeborough | 2010 | Soil Dynamics and Earthquake Engineering2010，，30： | 1 |
| 7 | Rotation symmetric boolean functions -- Count and cryptographic properties 显示文摘 | Pantelimon S Subhamoy M | 2008 | Discrete Applied Mathematics2008，156，10： | 1 |
| 8 | Basic Theory in Construction of Boolean Functions with Maximum Possible Annihilator Immunity显示文摘 | Deepak Kumar Dalai Subhamoy Maitra Sumanta Sarkar | 2006 | Designs Codes and Cryptography2006，，1： | 1 |
| 9 | Cryptanalysis of RSA with more than one decryption exponent显示文摘 | Santanu Sarkar Subhamoy Maitra | 2010 | Information Processing Letters2010，，8： | 1 |
| 10 | Dynamic soil–structure interaction of monopile supported wind turbines in cohesive soil显示文摘 | Domenico Lombardi Subhamoy Bhattacharya David Muir Wood | 2013 | Soil Dynamics and Earthquake Engineering2013，，： | 1 |
| 11 | A shake table investigation of dynamic behavior of pile supported bridges in liquefiable soil deposits显示文摘Bridges are a part of vital infrastructure,which should operate even after a disaster to keep emergency services running.There have been numerous bridge failures during major past earthquakes due to liquefaction.Among other categories of failures,mid span collapse(without the failure of abutments)of pile supported bridges founded in liquefiable deposits are still observed even in most recent earthquakes.This mechanism of collapse is attributed to the effects related to the differential elongation of natural period of the individual piers during liquefaction.A shake table investigation has been carried out in this study to verify mechanisms behind midspan collapse of pile supported bridges in liquefiable deposits.In this investigation,a typical pile supported bridge is scaled down,and its foundations pass through the liquefiable loose sandy soil and rest in a dense gravel layer.White noise motions of increasing acceleration magnitude have been applied to initiate progressive liquefaction and to characterize the dynamic features of the bridge.It has been found that as the liquefaction of the soil sets in,the natural frequency of individual bridge support is reduced,with the highest reduction occurring near the central spans.As a result,there is differential lateral displacement and bending moment demand on the piles.It has also been observed that for the central pile,the maximum bending moment in the pile will occur at a higher elevation,as compared to that of the interface of soils of varied stiffness,unlike the abutment piles.The practical implications of this research are also highlighted. | Piyush Mohanty Xu Dan Suryakant Biswal Subhamoy Bhattacharya | 2021 | Earthquake Engineering and Engineering Vibration2021，20，1： | 1 |
| 12 | A key pre-distribution scheme for wireless sensor networks: merging blocks in combinatorial design显示文摘 | Dibyendu Chakrabarti Subhamoy Maitra Bimal Roy | 2006 | International Journal of Information Security2006，，2： | 1 |
| 13 | Basic Theory in Construction of Boolean Functions with Maximum Possible Annihilator Immunity显示文摘 | Deepak Kumar Dalai Subhamoy Maitra Sumanta Sarkar | 2006 | Designs Codes and Cryptography2006，，1： | 1 |
| 14 | Analysis of the ' Wavelet Tree Quantization' watermarking strategy and a modified robust scheme显示文摘 | Tanmoy Kanfi Das Subhamoy Maitre | 2006 | Multimedia Systems2006，12，： | 1 |
| 15 | Bending–buckling interaction as a failure mechanism of piles in liquefiable soils显示文摘 | Suresh R. Dash Subhamoy Bhattacharya Anthony Blakeborough | 2009 | Soil Dynamics and Earthquake Engineering2009，，1： | 1 |
| 16 | Buckling and bending response of slender piles in liquefiable soils during earthquakes显示文摘 | Sumanta Haldar G.L. Sivakumar Babu Subhamoy Bhattacharya | 2008 | Geomechanics and Geoengineering2008，，2： | 1 |
| 17 | Modal analysis of pile‐supported structures during seismic liquefaction显示文摘 | Domenico Lombardi Subhamoy Bhattacharya | 2014 | Earthquake Engng Struct. Dyn2014，，1： | 1 |
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